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Friday, October 30 • 07:00 - 07:30
KVM Live Upgrade with Properly Handling of Passthrough Devices - Zhimin Feng, ByteDance

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VMM live upgrade is an emerging approach to upgrade the VMM without the host shutdown. There are several implementations of live upgrade for KVM. However, none of them seems handling the passthrough devices flawlessly. In this talk, we will analyze the requirements for the passthrough devices handling, and present how we follow those requirements to properly handle passthrough devices in our KVM live upgrade implementation. In addition, we also optimize the startup and suspend of VM, Our experiment shows that the total downtime is 13ms for VMM live upgrade(VM has 8 virtual CPUSs, 8GB memory, 1 disk and 1 network card.)


Zhimin Feng

Software Engineer, ByteDance
I am now working for ByteDance., currently focusing on QEMU/Virtualization related projects.

Friday October 30, 2020 07:00 - 07:30 GMT
KVM Theater
  KVM Track 2
  • Technical Skill Level Any